wk: wk_count – R documentation

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wk_count

Count geometry components

Description

Counts the number of geometries, rings, and coordinates found within each feature. As opposed to wk_meta(), this handler will iterate over the entire geometry.

Usage

wk_count(handleable, ...)

## Default S3 method:
wk_count(handleable, ...)

wk_count_handler()

Arguments

`handleable`	A geometry vector (e.g., `wkb()`, `wkt()`, `xy()`, `rct()`, or `sf::st_sfc()`) for which `wk_handle()` is defined.
`...`	Passed to the `wk_handle()` method.

Value

A data.frame with one row for every feature encountered and columns:

n_geom: The number of geometries encountered, including the root geometry. Will be zero for a null feature.
n_ring: The number of rings encountered. Will be zero for a null feature.
n_coord: The number of coordinates encountered. Will be zero for a null feature.

Examples

wk_count(as_wkt("LINESTRING (0 0, 1 1)"))
wk_count(as_wkb("LINESTRING (0 0, 1 1)"))

wk

Lightweight Well-Known Geometry Parsing

v0.4.1

MIT + file LICENSE

Authors

Dewey Dunnington [aut, cre] (<https://orcid.org/0000-0002-9415-4582>), Edzer Pebesma [aut] (<https://orcid.org/0000-0001-8049-7069>)

Initial release